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Expired European patentEurope

Process for the bromination of Nitroalcohols

EP 0341466 B1 · Applicant: Henkel Kommanditgesellschaft auf Aktien

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Listed from its EPO record in Patent Yard's archive of European patents past their term. Its claims, description and drawings are in the EPO PDF and on Google Patents, and the Claude kit works from them.

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Why it's free to use

  • Filed April 21, 1989 and granted September 9, 1992. A European patent lasts at most 20 years from filing, so its term ended April 21, 2009.
  • A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by October 21, 2014.
  • We check European rights only. A US or other national patent in its family could still be in force: check its family on Espacenet or Google Patents.
FiledApril 21, 1989
PublishedNovember 15, 1989
GrantedSeptember 9, 1992
Term endedApril 21, 2009
Application numberEP 89107202
Classification (CPC)C07C201/12

Timeline

Timeline From EPO dates

1990199219941996199820002002200420062008Application filedApril 21, 1989PublishedNov 15, 1989Patent grantedSep 9, 1992Term endedApril 21, 2009

Sources & verification

Official EPO records

Full published documentClaims, description and drawings as a PDF.EPOEuropean Patent RegisterProcedure, status, file inspection and legal events.EPOLinked open EP data recordThe bibliographic record this page is built from.EPO

Cross-check elsewhere

Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comEspacenetNational family members and their legal status.European Patent Office

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